• 1st Communications Installation & Maintenance Ltd
  15 Bowling Green Lane, LONDON, Greater London, EC1R 0BD
• 1st Communications Installation & Maintenance Ltd
  Pegasus House, 116-120 Golden Lane, LONDON, Greater London, EC1Y 0TF
• A A Telecom Ltd
  38 Thames Street, SUNBURY ON THAMES, Middlesex, TW16 6AF
• Absolute Voice & Data
  Scotsbridge House, Scots Hill, Croxley Green, RICKMANSWORTH, Hertfordshire, WD3 3BB
• Act
  77 Croydon Road, CATERHAM, Surrey, CR3 6PD
• Activ8 Distribution
  Unit 22 Park House, 15-19 Greenhill CR, WATFORD, Hertfordshire, WD18 8PH
• Advance Phone Warehouse UK Ltd
  41 Balaam Street, LONDON, Greater London, E13 8EB
• Airspan Communications Ltd
  Cambridge House, Oxford Road, UXBRIDGE, Middlesex, UB8 1UN
• Airspan Networks Eastern Europe Ltd
  Cambridge House, Oxford Road, UXBRIDGE, Middlesex, UB8 1UN
• Alcatel Pension Trustees Ltd
  Christchurch Way, LONDON, Greater London, SE10 0AG
• Alpha Lift Installations Ltd
  Unit 201 Lee Valley Technopark, Ashley Road, LONDON, Greater London, N17 9LN
• Alphatel
  123 Bickenhall Mansions, Bickenhall Street, LONDON, Greater London, W1U 6BT
• Applied Satellite Technology
  A M P House, Dingwall Road, CROYDON, Surrey, CR0 2LX
• Applied Satellite Technology Ltd
  Airport House, Purley Way, CROYDON, Surrey, CR0 0XZ
• Archway Trading Co Ltd
  502 Hornsey Road, LONDON, Greater London, N19 4EF
• Area Communications
  16 Acacia Avenue, Wraysbury, STAINES, Middlesex, TW19 5HD
• Argyll Business Centres Head Office
  Arundel House, 31a ST. James's Square, LONDON, Greater London, SW1Y 4JR
• Aspect Software UK Ltd
  2 The Square, Stockley Park, UXBRIDGE, Middlesex, UB11 1AD
• Aspen Electronics Ltd
  1-3 Kildare Close, RUISLIP, Middlesex, HA4 9UR
• Astarte Business Communications Ltd
  Lee Valley Technopark, Ashley Road, LONDON, Greater London, N17 9LN
• Aur Telephones
  260 Tottenham Court Road, LONDON, Greater London, W1T 7RF
• B-Dynamic Communications Ltd
  274 Hither Green Lane, LONDON, Greater London, SE13 6TT
• BTNL
  High Street, EPPING, Essex, CM16 4DA
• BTS Holdings plc
  B T S House, 69-73 Manor Road, WALLINGTON, Surrey, SM6 0DD
• Bang & Olufsen (Croydon)
  2 Norfolk House, Wellesley Road, CROYDON, Surrey, CR0 1LH
• Barrington Technology Ltd
  Barrington House, 19 Church Road, EPSOM, Surrey, KT17 4DZ
• Bestway Communications Ltd
  Lee Valley Technopark, Ashley Road, LONDON, Greater London, N17 9LN
• Bruel & Kjaer
  92 Uxbridge Road, Harrow Weald Lodge, HARROW, Middlesex, HA3 6BZ
• Bulk GSM
  Unit 25 Cygnus Business Centre, Dalmeyer Road, LONDON, Greater London, NW10 2XA
• Business Systems (U.K.) Ltd
  462 London Road, ISLEWORTH, Middlesex, TW7 4ED
• C K Business Systems
  46 Horsenden La North, GREENFORD, Middlesex, UB6 0PA
• Cablefree Solutions Ltd
  27 Matham Road, EAST MOLESEY, Surrey, KT8 0SX
• Cablewise Communications
  47 Hillside Road, ASHTEAD, Surrey, KT21 1RZ
• Callsaver Telecoms Ltd
  20 Caledonian Road, LONDON, Greater London, N1 9DU
• Cardslot Ltd
  3 Rundell Crescent, LONDON, Greater London, NW4 3BS
• Channell Commercial Europe Ltd
  Fairway, ORPINGTON, Kent, BR5 1EG
• Channell Ltd
  Fairway, ORPINGTON, Kent, BR5 1EG
• Chelsea Telecom Ltd
  3 Windmill House, Windmill Walk, LONDON, Greater London, SE1 8LX
• Chesterfield Associates
  Fitzroy House, Lynwood Drive, WORCESTER PARK, Surrey, KT4 7AT
• Chyzons (Telecommunications) Ltd
  161 Ruxley Lane, EPSOM, Surrey, KT19 9EX
• City Telecom
  36 Golders Gardens, LONDON, Greater London, NW11 9BU
• Cleanline Installations Ltd
  Terminal House, Station Approach, SHEPPERTON, Middlesex, TW17 8AS
• Coherent Research Ltd
  Unit 8 Princess Mews, Horace Road, KINGSTON UPON THAMES, Surrey, KT1 2SZ
• Commsense Advice
  11 Hartlepool Court, LONDON, Greater London, E16 2RL
• Communicatex Ltd
  196 High Road, LONDON, Greater London, N22 8HH
• Communication & Technical Services Ltd
  17 Pages Walk, LONDON, Greater London, SE1 4SB
• Compass Communications UK Ltd
  3 Lewis Road, SIDCUP, Kent, DA14 4NB
• Connect Communications Holdings Ltd
  Hertford House, 1 Cranwood Street, LONDON, Greater London, EC1V 9QP
• Conor & Stuart Communications Ltd
  130 Park Avenue, BUSHEY, Hertfordshire, WD23 2BB
• Converse UK Ltd
  Hertford Place, RICKMANSWORTH, Hertfordshire, WD3 9XF
• Countrywide Installations
  18 South Lane, NEW MALDEN, Surrey, KT3 5HT
• Cti Billing Solutions Ltd
  Nordic House, 120 High Street, PURLEY, Surrey, CR8 2AD
• Cti Data Solutions Ltd
  Nordic House, 120 High Street, PURLEY, Surrey, CR8 2AD
• D R D Communications Ltd
  Connect House, 21a Willow Lane, MITCHAM, Surrey, CR4 4NA
• Daltec Associates Ltd
  5 Oxford Road, Wealdstone, HARROW, Middlesex, HA3 7RG
• Damovo (U K) Ltd
  4 Lion Park Avenue, CHESSINGTON, Surrey, KT9 1ST
• Data Sharp
  Snaresbrook Drive, STANMORE, Middlesex, HA7 4QN
• Data-Flo Business Solutions
  Research House, Fraser Road, Perrivale, GREENFORD, Middlesex, UB6 7AQ
• Datacomms
  Berry Lane, Chorleywood, RICKMANSWORTH, Hertfordshire, WD3 5EX
• Dataflex Design Communications Ltd
  Connect House, Kingston Road, LEATHERHEAD, Surrey, KT22 7LT
• Dataphone Communications Ltd
  Riverside House Woodford Trading Estate, Southend Road, WOODFORD GREEN, Essex, IG8 8HQ
• Datasharp It Solutions
  Cardinal Point, Park Road, RICKMANSWORTH, Hertfordshire, WD3 1RE
• Datasharp Telecom
  Linton House, The Rowans, Chalfont St. Peter, GERRARDS CROSS, Buckinghamshire, SL9 8SE
• Day Light Enterprise Ltd
  58 Knightland Road, LONDON, Greater London, E5 9HS
• Digicell Communications
  119 High Street, THORNTON HEATH, Surrey, CR7 8RZ
• Digital Business Services Ltd
  95 Desford Way, ASHFORD, Middlesex, TW15 3AS
• Direct Telecom
  9 Chipstead Valley Road, COULSDON, Surrey, CR5 2RB
• Direct Telecommunications I.T Services Ltd
  5 Drakes Courtyard, 291 Kilburn High Road, LONDON, Greater London, NW6 7JR
• Discount Payphones
  177 High Street, Langley, SLOUGH, Berkshire, SL3 8LP
• Discount Payphones
  5 Tulip Close, HAMPTON, Middlesex, TW12 3SA
• Diva Communications Ltd
  196 High Road, LONDON, Greater London, N22 8HH
• Dolphin Communications
  85 Kingsley Road, HOUNSLOW, Middlesex, TW3 4AH
• Dual Tech Communications
  196 High Road, LONDON, Greater London, N22 8HH
• E & H Communications
  23 Mount Grace Road, POTTERS BAR, Hertfordshire, EN6 1RD
• Easaphone Services
  29a Greencroft Gardens, LONDON, Greater London, NW6 3LN
• Elephant Talk Communications PRS U.K. Ltd
  Unit 24 Hallmark Trading Estate, Fourth Way, Wembley, Middlesex, HA9 0LB
• Elmeg
  2 Rydens Road, WALTON ON THAMES, Surrey, KT12 3BS
• Em: Seven Communications
  11 Chenies Street, LONDON, Greater London, WC1E 7EY
• Envoy Holdings Ltd
  2 The Square, Stockley Park, UXBRIDGE, Middlesex, UB11 1AD
• Enzcom Solutions
  4 Maple Industrial Estate, Maple Way, FELTHAM, Middlesex, TW13 7AW
• Euro Worldwide Communications
  85 Kingsley Road, HOUNSLOW, Middlesex, TW3 4AH
• European Federal Bank Ltd
  Kemp House, 152-160 City Road, LONDON, Greater London, EC1V 2NX
• European Gateway
  140-142 King's Cross Road, LONDON, Greater London, WC1X 9DS
• European Moulin Rouge Ltd
  Kemp House, 152-160 City Road, LONDON, Greater London, EC1V 2NX
• Eurotraders UK Ltd
  Kemp House, 152-160 City Road, LONDON, Greater London, EC1V 2NX
• Evolution Voice & Data plc
  36 Groveeat ST. Helen's, LONDON, Greater London, EC3A 6AP
• Excell Business Systems
  53 Frith Street, LONDON, Greater London, W1D 4SN
• Excellent Communications Ltd
  50 Regent St, LONDON, Greater London, W1B 5RD
• FLR Spectron
  Orpington Trade Centre, Murray Road, ORPINGTON, Kent, BR5 3SS
• Flix
  16a Chelsea Wharf, Lots Road, LONDON, Greater London, SW10 0QJ
• Foneline
  28 High Road, ROMFORD, Essex, RM6 6PR
• Funis
  Star House, Star Road, UXBRIDGE, Middlesex, UB10 0QH
• G M A UK Ltd
  PO Box 581, Croxley Green, RICKMANSWORTH, Hertfordshire, WD3 3ZY
• Glovicom
  50 Regent St, LONDON, Greater London, W1B 5RD
• Granger Telecom
  Granger Corner, 1 Brooklands Road, WEYBRIDGE, Surrey, KT13 0SD
• Grapevine Communications London
  488 ST. Albans Road, WATFORD, Hertfordshire, WD24 6QU
• Grapevine Communications Ltd
  346-348 ST. Albans Road, WATFORD, Hertfordshire, WD24 6PQ
• Hadi Telecommunications
  45 Commercial Street, LONDON, Greater London, E1 6BD
• Hi Tech Network Solutions Ltd
  33 Rushworth Street, LONDON, Greater London, SE1 0RB
• Hillside Telecom
  227 Nether Street, LONDON, Greater London, N3 1NT
• I C S Telecomm UK Ltd
  67 Brick Lane, LONDON, Greater London, E1 6QL
• I D S Group
  2 Long Street, LONDON, Greater London, E2 8HJ
• In Touch Communications UK Ltd
  80 Station Avenue, EPSOM, Surrey, KT19 9UG
• Independent Telephone Company Ltd
  329 Putney Bridge Road, LONDON, Greater London, SW15 2PG
• Internal Communications Network Ltd
  268 Hackney Road, LONDON, Greater London, E2 7SJ
• Irte International Ltd
  42 Prince George Avenue, LONDON, Greater London, N14 4TP
• Jeffrey C Black & Associates
  The Coach House, King Street, LONDON, Greater London, N2 8EA
• Jetstream Communications Ltd
  16 Elmtree Road, TEDDINGTON, Middlesex, TW11 8ST
• K T I T Ltd
  228 Merton Road, LONDON, Greater London, SW19 1EQ
• Kddi Eastern Europe Ltd
  Atlas House, 1-7 King Street, LONDON, Greater London, EC2V 8AU
• Ketles.Com
  26 Abercorn Close, SOUTH CROYDON, Surrey, CR2 8TG
• Kingston Business Communications
  30 St James's Street, LONDON, Greater London, SW1A 1HB
• Kokusai Electric Europe GmbH
  West Cross Centre, Great West Rd., BRENTFORD, Middlesex, TW8 9ER
• Kynetix Technology Group
  A M P House, Dingwall Road, CROYDON, Surrey, CR0 2LX
• Latitude Communications
  50 Regent St, LONDON, Greater London, W1B 5RD
• Leonard-Carter Communications Ltd
  The Granary, 113 Lavender Walk, LONDON, Greater London, SW11 1JS
• London Central Communications Ltd
  81 Southwark Street, LONDON, Greater London, SE1 0HX
• Longcroft (GX) Management Company Ltd
  49 Station Road, GERRARDS CROSS, Buckinghamshire, SL9 8ES
• M R S Communications
  92 Croydon Road, LONDON, Greater London, SE20 7AB
• M T V Distribution plc
  Unit 8 9 Sky Business Park, Eversley Way, EGHAM, Surrey, TW20 8RF
• MTV Telecom (Distribution) plc
  Unit 8 9 Sky Business Park, Eversley Way, EGHAM, Surrey, TW20 8RF
• Macfarlane Telesystems Ltd
  22-26 Albert Embankment, LONDON, Greater London, SE1 7TJ
• Matrix Communications
  707 High Road, LONDON, Greater London, N12 0BT
• Meridian Options Systems Support Ltd
  69-71 Carshalton Road, SUTTON, Surrey, SM1 4LH
• Meteor Communication Ltd
  Hertfordshire Business Centre, Alexander Road, London Colney, ST ALBANS, Hertfordshire, AL2 1JG
• Metrodata Ltd
  Blenheim House Crabtree Office Village, Eversley Way, EGHAM, Surrey, TW20 8RY
• Miton Systems Ltd
  49 Dove Park, Chorleywood, RICKMANSWORTH, Hertfordshire, WD3 5NY
• Mobestar Ltd
  1 Marylebone High Street, LONDON, Greater London, W10 4NB
• Mobyko Ltd
  Third Floor, 27 Beak Street, LONDON, Greater London, W1F 9RU
• Mojocom Systems Ltd
  Birchwood Cottage, Woldingham Road, Woldingham, CATERHAM, Surrey, CR3 7LR
• Multimessage Systems Ltd
  Units 1 & 2 Block 26, Cranborne Industrial Estate, Cranborne Road, POTTERS BAR, Hertfordshire, EN6 3JH
• NTL
  Unit 5, Stafford Cross, CROYDON, Surrey, CR0 4TU
• Native Networks Ltd
  Christchurch Way, LONDON, Greater London, SE10 0AG
• Next Systems Ltd
  67-69 Woodham Lane, New Haw, ADDLESTONE, Surrey, KT15 3ND
• North West Telecom
  40 Craven Park Road, LONDON, Greater London, NW10 4AE
• Ocean Communications Ltd
  38 The Netherlands, COULSDON, Surrey, CR5 1ND
• Olympia Technology
  5 Archdale Business Centre, Brember Road, HARROW, Middlesex, HA2 8DJ
• Open Telecommunications Ltd
  Lee Valley Technopark, Ashley Road, LONDON, Greater London, N17 9LN
• Panorama Antennas Ltd
  61 Frogmore, LONDON, Greater London, SW18 1HF
• Payphones South East Ltd
  4 Hazel Way, COULSDON, Surrey, CR5 3PJ
• Pinnacle Communications Ltd
  60 Southwark Bridge Road, LONDON, Greater London, SE1 0AS
• Postfield Systems
  53 Ullswater CR, COULSDON, Surrey, CR5 2HR
• Postfield Systems
  Bushey Close, Old Barn Lane, KENLEY, Surrey, CR8 5AU
• Power Supply Systems Finance Company UK Ltd
  97-101 Peregrine Road, ILFORD, Essex, IG6 3XJ
• Precision Telecom
  11 Reigate Road, ILFORD, Essex, IG3 9HD
• Premier Choice Telecom Ltd
  Premier Househurst Road,